Finding the Third Proportional to 42,017,976 and 91,397,856

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017,976 : 91,397,856 = 91,397,856 : x
2. Step 2: Convert to fraction form
   42,017,976/91,397,856 = 91,397,856/x
3. Step 3: Cross multiply
   42,017,976x = 91,397,856 × 91,397,856
4. Step 4: Simplify right side
   42,017,976x = 8,353,568,081,396,736
5. Step 5: Solve for x
   x = 8,353,568,081,396,736/42,017,976
6. Step 6: Final answer
   x = 198,809,387.71